Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask DBMS Expert


Home >> DBMS

Q1. Define the term foreign key. What is this concept mainly used for?

Q2. Describe the entity integrity and referential integrity constraints. Why each is considered significant?

Q3. describe why are duplicate tuples not permitted in a relation?

Q4. Consider the given relations:

WORKS(Pname, Cname, Salary)
LIVES(Pname, Street, City)
LOCATED_IN(Cname, City)
Manager(Pname, Mgrname)

Where Pname = Person name, Cname = Company name and Mgrname = Manager name.

prepare down the SQL queries for the given:

a) List all the names of people who work for the company Wipro all along with the cities they live in.

b) Find out the names of the persons who live and work in the similar city.

c) Find out the names of the persons who don’t work for ‘Infosys’.

d) Find out the persons whose salaries are more than that of the entire Oracle employees.

e) Find out the names of the companies which are located in every city where the company ‘Infosys’ is situated.

Q5. Describe the Inner Join concept in the Relational Algebra.

DBMS, Programming

  • Category:- DBMS
  • Reference No.:- M910404

Have any Question? 


Related Questions in DBMS

Data warehouses and data martswrite a one- to two-page

Data Warehouses and Data Marts Write a one- to two-page (250-500 word) paper that discusses the differences between data warehouses and data marts. Also, discuss how organizations can use data warehouses and data marts t ...

Fundamentals of databases assignment 1 -q1 explain the

Fundamentals of Databases Assignment 1 - Q1. Explain the distinction between total and partial constraints. Q2. Explain the difference between a weak and a strong entity set. Q3. Explain the distinction between disjoint ...

Relational databases theory and practice assignmentanswer

Relational databases: theory and practice Assignment ANSWER ALL QUESTIONS Question 1 - Use the block notes to answer the following questions: i. Explain what is meant by the process of denormalization and how it is done. ...

The strayer oracle server may be used to test and compile

The Strayer Oracle Server may be used to test and compile the SQL Queries developed for this assignment. Your instructor will provide you with login credentials to a Strayer University maintained Oracle server. A multina ...

The use of an access database has become very common over

The use of an Access database has become very common over the last 10 years. Access is the preferred desktop database because server databases such as structured query language (SQL) and others are too complex and are be ...

Assignment - data mining and machine learning in the real

Assignment - Data Mining and Machine Learning in the Real World OBJECTIVE: Learn about some of the things going on in the real-world with Machine Learning and Data Mining. Your answers to the questions in the cells right ...

Assignment business intelligence and data

Assignment: Business Intelligence and Data Warehouses Businesses today are extremely reliant on large amounts of data for making intelligent business decisions. Likewise, the data warehouses are often structured in a man ...

Virtualization fundamentalsunit 3 research projectwrite an

Virtualization Fundamentals Unit 3 Research Project Write an overview of *any two* of the following topics. Each overview should be between one half and one full page long. You should use a minimum of two sources for eac ...

At this point you decide to implement a hash structure for

At this point, you decide to implement a Hash structure for the contributor data to prepare for searches. You will read the contributor information from a file provided; it is a comma delimited (CSV) file. As each record ...

Assignmentcreate a simple excel spreadsheet with data to

Assignment Create a simple excel spreadsheet with data to update the database. 1. Create a form (frmUpdateMediaLink) to link the spreadsheet to a table in the database (you can link the spreadsheet manually using the wiz ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen